[RC-Monster Mike]

For ultimate reliability, the 7xl, warrior controller and rc-monster heatsink/clamp is the best dollor for dollar performance buy, in my opinion(I do have a bit of experience:)). The Lehner basic xl motors are also excellent motor, with impressive runtime and power output. They will run a bit warm in a particularly heavy truck, though, while the 7xl can handle the heavy trucks much easier. On 14 cells, the 7xl is very happy to deliver power and speed(as much as the batteries can deliver) without overheating. There are better motors and better controllers (BK has several upgraded controllers, and Lehner has many high end motor in their line), but none that offer the price/performance ratio of this combo.